Dell Precision M6800 is not compatible with Windows 8.1 Pro x64 (adaptive backlight, adaptive brightness, dynamic contrast, advan

Hello,

I have a problem with my laptop, below are all details. Please who has M 6800 with Windows 8.1 Pro
could you disable (Nvidia Optimus technology) in BIOS and then check if this problem exists or not on your laptop. Please write me about your results!

MY SETUP/ARRANGEMENT:
1) Dell Precision M6800 laptop (Intel HD 4600 graphics, Nvidia Quadro K3100M),
switchable graphics (Nvidia Optimus technology) is disabled in BIOS;
2) Windows 8.1 Pro x64, all firmwares, BIOS and drivers are the latest versions, all latest windows updates
are installed (I performed a clean OS installation, then installed all necessary drivers, then installed
all Windows updates, no additional software were installed);
3) I always use "Maximum Performance" power plan with the following settings in its section "screen":
-- turn off display (on battery: 10 min, plugged in: 15 min),
-- display brightness (on battery: 85%, plugged in: 85%),
-- dimmed display brightness (on battery: 85%, plugged in: 85%),
-- enable adaptive brightness (on battery: switched off, plugged in: switched off);
4) There is uniform dark grey background on the Windows desktop (this background might be any other
dark color, uniform or not, without any bright areas).

PROBLEM DESCRIPTION:
Display brightness changes in spite of the adjusted settings in active power plan. The problem exists
in two cases only: (i) I work on battery; (ii) transition from battery to mains or vice versa. In case "i"
display brightness increases when a bright object appears on the uniform dark grey background of my Windows
desktop (for instance if you run notepad.exe and its mainly white window appears over the desktop) and
display brightness decreases when the above bright object disappears from the uniform dark grey background
of my Windows desktop (for instance if you close or reduce to the taskbar the notepad.exe window). In case
"ii" display brightness decreases when you pull a power connector/plug off the laptop and increases when
the connector/plug is plugged into the laptop again.

ADDITIONAL DETAILS ABOUT THE PROBLEM:
This issue does not have a place if switchable graphics (Nvidia Optimus technology) is enabled in BIOS,
and the laptop screen is driven by, I assume, Intel HD 4600 graphics. As I utilize on my laptop
10-bit color depth workflow and correct color reproduction, it's much comfortable to work without
switchable graphics. I tried all latest video drivers, from both the laptop manufacturer web-site and
Nvidia web-site drivers including their latest beta-drivers, but the problem exists regardless of
the driver version installed. There isn't the problem under Windows 7 Pro x64.

 

I fixed that "issue" by just disabling adaptive brightness or whatever it's called under the power section in the intel graphics control software. You may want to do that, then restart and see if it fixes your issue. It may even fix it once you disable the integrated graphics again, but I'm not sure. There also may be a similar option under the nvidia control panel, but I'm not sure as I have AMD.

 

Hello,

I can't launch the intel graphics control panel because switchable graphics (Nvidia Optimus technology) is disabled in BIOS. I have nvidiait is not similar to AMD.

 

With the system off and lid closed, boot to an external monitor. Do a clean install (under advanced install options) of the Nvidia drivers. Shut down the system. Reboot undocked with lid open. See if this fixes it.

 

Thanks for your help, I did all you have written but unfortunately it did not help, the issue still exists.

 

Going to be trying to repeat the issue with the 340.43 beta drivers. Can you check them as well? NVIDIA DRIVERS Quadro Desktop/Quadro Notebook Driver Release 340 BETA

 

Hi, today I installed new A09 BIOS (released on the 4th of July 2014) for my M6800,
and the latest beta drivers for video card K3100M, the Quadro video driver was installed
several times -- in a standard manner and as you adviced.
But that did not eliminate the issue or change it behaviour !

Please WHO HAVE M6800 with Nvidia -- do you have the same issue as I HAVE ???

 

Hi, recently I sent my laptop to official Dell service, and today they have confirmed that my laptop has NOT any issues with its hardware.
They will investigate the issue further but most probably it lies within the mistake inside laptop's firmware.

 

Hi, today offical Dell service have confirmed that my problem is inside laptop's firmaware and/or drivers. For now they do not have any desicions and it is neсessary to wait when they release new firmware/drivers. I did not get the answer as well - this problem exists only on my laptop or it is typical for all laptops M6800.